After reading the contract for the Citibank ATM I found this:

Outside of the U.S., you can use your Citibank Banking Card at more than 1,000,000 ATMs. However, there is a foreign exchange fee of 2% (1% for Citigold clients). For example, if you withdrew 100 Euros at any ATM in Italy, and the value in USD was $125, then the 2% fee would be $2.50 ($1.25 for Citigold clients). This exchange fee also applies if you use your Citibank Banking Card to make purchases overseas.


I do have a suggestion though. After Nov 2007 there was a settlement that people got for using their cards overseas because the foreign transaction was not put in a lot of contracts, just snuck in. Almost all banks have this fee, I have found that CapitolOne (some people hate them) does not charge international or other services fees when traveling overseas. Also they do go by the international exchange rate so you tend to get a better rate anyway than using an ATM. As long as you pay off your balance in full you shouldn't have any issues.